216340630 has 32 divisors (see below), whose sum is σ = 438524928. Its totient is φ = 76130400.

The previous prime is 216340613. The next prime is 216340637. The reversal of 216340630 is 36043612.

It is a junction number, because it is equal to n+sod(n) for n = 216340595 and 216340604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216340637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28312 + ... + 35131.

It is an arithmetic number, because the mean of its divisors is an integer number (13703904).

Almost surely, 2^216340630 is an apocalyptic number.

216340630 is an abundant number, since it is smaller than the sum of its proper divisors (222184298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216340630 is a wasteful number, since it uses less digits than its factorization.

216340630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63492.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 216340630 is about 14708.5223595030. The cubic root of 216340630 is about 600.3152324999.

The spelling of 216340630 in words is "two hundred sixteen million, three hundred forty thousand, six hundred thirty".